In Seattle, Kilroy Realty Corp. purchased an office/lab building, the Institute of Systems Biology, from Vulcan Real Estate for $106.1 million. The 11-year-old ISB building was one of Vulcan Real Estate’s first developments in the South Lake Union submarket. And it is the second South Lake Union asset that Kilroy has bought from Vulcan. The firm bought Westlake/Terry, a two-building property, for $170 million.